CN101704204A - Noncentral penetrated super-finishing method of spherical roller - Google Patents
Noncentral penetrated super-finishing method of spherical roller Download PDFInfo
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- CN101704204A CN101704204A CN200910154564A CN200910154564A CN101704204A CN 101704204 A CN101704204 A CN 101704204A CN 200910154564 A CN200910154564 A CN 200910154564A CN 200910154564 A CN200910154564 A CN 200910154564A CN 101704204 A CN101704204 A CN 101704204A
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Abstract
The invention discloses a noncentral penetrated super-finishing method of a spherical roller. When a super-finishing machine grinds the supporting surface of the spherical roller, the front guide roller and the rear guide roller which drive the spherical roller to tilt relatively, the supporting surface of the front guide roller and the rear guide roller is a revolution surface obtained according to the curve envelope theory, when the front guide roller and the rear guide roller rotate, the spherical roller is driven to autorotate and make axial penetrated feed movement, and simultaneously under the action of cylinder pressure, oil stone applies super finishing on the supporting surface of the spherical roller. The method overcomes the disadvantages of the prior art, ensures smooth motion of the spherical roller during super finishing, leads the bus arc and chamfer arc of the supporting surface to be smoothly connected, and improves the surface roughness and manufacturing accuracy of the spherical roller; after the spherical roller is installed in the rear bearing of a self-aligning roller bearing, the operation noise is lowered, and the service life is prolonged; and simultaneously, the manufacturing efficiency is improved, and online automatic production of grinding and super finishing is easy to realize.
Description
Technical field
The present invention relates to the manufacture method of bearings parts, be specifically related to a kind of processing and super lappingout technology of spherical roller bearing-surface.
Background technology
Spherical roller is the rolling element in the self-aligning roller bearing.The bus of spherical roller bearing-surface is a circular arc, and both sides are connected with the chamfering circular arc.Because of self-aligning roller bearing structure difference, bearing-surface bus circular arc can be a symmetry and asymmetric.The dimensional accuracy of roller bearing face and geometric accuracy are very big to the precision and the performance impact of bearing, or even conclusive.The geometric accuracy of roller bearing face comprises the geometrical precision of bearing-surface circular arc and the circularity of bearing-surface.
At present, the manufacturing of spherical roller bearing-surface realizes by accurate grinding, passes through optical crosstalk process improving roughness sometimes after the grinding again.Optical crosstalk technology can not be improved the form accuracy and the circularity of bearing-surface, can cause uncontrollable infringement on the contrary.Therefore, the accuracy of manufacture of spherical roller is always not as similar bearing part cylindrical roller and taper roller height, and it is bearing manufacturing technology long-term aim that its whole manufacturing procedure is introduced super lappingout technology.
It is state-of-the-art in the super lappingout technology of roller not being in the mood for the super lappingout technology of penetration type, and successful Application in cylindrical roller and taper roller are made.But the bus of spherical roller is a circular arc, unlike cylindrical roller and taper roller be straight line like that.Realize that it is the design of deflector roll bearing-surface that spherical roller is not in the mood for the core technology of the super lappingout of penetration type.
The type of attachment of the circular arc of spherical roller bearing-surface and chamfering circular arc does not all have clear and definite regulation in relevant criterion, they are that sharp edge intersects in the engineering practice.Heavy duty serious stress concentration can occur when this zone comes in contact down, and causes violent wearing and tearing and fatigue.The smooth connection that realizes circular arc is extremely important for heavily loaded self-aligning roller bearing.
Summary of the invention
The purpose of this invention is to provide a kind of Noncentral penetrated super-finishing method of spherical roller, it has overcome the deficiencies in the prior art, accuracy of manufacture raising, the surface roughness of spherical roller are improved, and the running noise of the self-aligning roller bearing rear bearing of packing into reduces, and improve the service life of bearing.
For achieving the above object, the technical solution used in the present invention is: when Superfinishing machine grinds the bearing-surface of spherical roller, drive the preceding deflector roll and the back deflector roll relative tilt of spherical roller motion, the bearing-surface of deflector roll and back deflector roll is the surface of revolution of trying to achieve according to the envelope of curve theory before described, preceding deflector roll and back deflector roll drive the spherical roller rotation and do axial penetration type feed motion by definite track when rotating, and oilstone bearing-surface to spherical roller under the pressure effect of cylinder is implemented fine abrasive simultaneously.
Further, the corresponding cross section radius of a circle of deflector roll and back deflector roll equates that and preceding deflector roll and back deflector roll are made in the same way constant speed and rotated before of the present invention.
Further, of the present invention before the bearing-surface of deflector roll and back deflector roll comprise introduction segment, ground section and derivation section, the introduction segment and the bus of deriving section respectively with smooth connection of bus of ground section.
Further, the present invention is provided with two above active sections in described ground section, is provided with changeover portion between two adjacent active sections, the smooth connection of bus of active section and adjacent changeover portion.
During spherical roller bearing-surface fine abrasive of the present invention, rotatablely move and the feed motion of roller all is to be driven simultaneously by the preceding deflector roll of Superfinishing machine and back deflector roll. spherical roller is sent into the introduction segment of deflector roll bearing-surface according to this, the automatic driven roller of deflector roll is around self axis rotation, and do the penetration type feed motion vertically roller is sent into ground section, oilstone is implemented fine abrasive to the spherical roller bearing-surface under the cylinder pressure effect, withdraw from grinding by deriving section then, finish a super lappingout cycle. according to grinding technics, when ground section need be divided into two above active sections, changeover portion is set between active section, realize a plurality of cycles grindings. after withdrawing from last cycle grinding, enter next milling cycle by changeover portion, realize continuous slightly grinding and lapping technique.
In the technical scheme of the present invention, the axis of preceding deflector roll and back deflector roll is a relative tilt, and their axis rotates identical angle in positive negative direction respectively around the horizontal diameter of bearing-surface middle section circle, the speed of the size decision spherical roller penetration type feeding of angle.The bearing-surface of preceding deflector roll and back deflector roll is the surface of revolution according to the theoretical design of envelope of curve.Each instantaneously has a meshing point respectively with roller two bearing-surfaces, these two meshing point supporting rollers on the bearing-surface of the theoretical design of envelope of curve, make the position of roller instantaneous centre and the attitude of instantaneous axis be in the state that fine abrasive requires, the friction drive roller by meshing point rotates and the penetration type feed motion simultaneously simultaneously.Rotatablely moving is roller around the rotation of self axis, and feed motion is the penetration type feed motion of roller along axis direction.The corresponding cross section radius of a circle of preceding deflector roll and back deflector roll is to equate everywhere, and does constant speed rotation in the same way by the transmission mechanism drive, has further guaranteed the stationarity of roller penetration type feed motion whole process.The rotating speed of deflector roll is required to determine by grinding technics according to the size of processing roller diameter.Because introduction segment and the bus of deriving section and smooth respectively connection of bus of ground section, also smooth connection of bus of active section and adjacent changeover portion, guaranteed that the circular arc of spherical roller bearing-surface is connected with the smooth of chamfering circular arc.
The quality that technical scheme of the present invention is ground sphere roller bearing face also is decided by the oilstone quality, the selection of granularity and hardness.
Compared with prior art, the beneficial effect that has of the present invention is:
1. realize the fine abrasive of spherical roller, remove residual surperficial micro-bulge and the defective of grinding process, improve the roughness of roller bearing face, the friction and wear of the bearing rear bearing of packing into reduces, and saves energy, and precision stability improves.
Spherical roller be not in the mood for the penetration type superfine grinding method, the driven roller rotation improves the dimensional accuracy and the circularity of grinding the roller bearing face; Accurate axially penetration type feeding improves the precision of grinding the roller circular shape, and the running accuracy of the bearing rear bearing of packing into improves, and vibration and noise reduce.
3. Noncentral penetrated super-finishing method of spherical roller, roller is the penetration type continuous feed when grinding roller, the process of lapping stable and continuous is made the efficient height, can realize slightly grinding and lapping technique with machine, and be easy to realize grinding and the production of super lappingout on-line automation.
4. Noncentral penetrated super-finishing method of spherical roller, guarantee that the spherical roller bearing-surface is connected with the smooth of chamfering, bearing-surface circular arc and chamfering circular arc smooth is connected can significantly be alleviated the stress that heavily loaded lower roller contact produces and concentrate, and prevention initial failure prolongs bearing service life.
The present invention is equally applicable to the Precision Machining that bus is other axial workpiece of circular arc.
Description of drawings
Fig. 1 is a spherical roller, the symmetry with asymmetrical.
Fig. 2 is the schematic diagram that spherical roller of the present invention is not in the mood for the super lappingout deflector roll of penetration type bearing-surface structure.
Fig. 3 is the structural representation that spherical roller of the present invention is not in the mood for the penetration type Superfinishing machine.
Among the figure: the 1-spherical roller; Deflector roll before the 2-; Deflector roll behind the 3-; The 4-oilstone; The 5-cylinder; The 6-transmission mechanism.
The specific embodiment
Below in conjunction with accompanying drawing, further specify concrete enforcement mode of the present invention.
As Fig. 1, the bus of spherical roller bearing-surface is a circular arc, and bearing-surface circular arc both sides are connected with the chamfering circular arc.According to the difference of self-aligning roller bearing Structural Design Requirement, the bearing-surface circular arc have the symmetry with asymmetric two kinds.
As Fig. 2, spherical roller is not in the mood for the bearing-surface of penetration type Superfinishing machine deflector roll and is made up of introduction segment, ground section and derivation section.Ground section can be one whole section; Also can comprise two above active sections, establish changeover portion between the active section.The axis of deflector roll and back deflector roll is a relative tilt before the Superfinishing machine, and their axis rotates identical angle in positive negative direction respectively around the horizontal diameter of bearing-surface middle section circle.Each section of deflector roll bearing-surface bus is tried to achieve according to the envelope of curve theory, introduction segment and derive the bus of section and smooth respectively connection of bus of ground section, also smooth connection of bus of active section and adjacent changeover portion.Preceding deflector roll is equal everywhere with the corresponding cross section of deflector roll, back radius of a circle, and does constant speed rotation in the same way by same transmission mechanism drive, has further guaranteed the stationarity of roller penetration type feed motion whole process.Before the surface of revolution that forms of deflector roll and back deflector roll bearing-surface bus each instantaneously a meshing point is arranged respectively with roller, determined the fine abrasive state of roller at the transient posture of the instantaneous centre position of the supporting lower roller of these two meshing points and axis.Friction by meshing point simultaneously drives the roller work around the spinning motion of axis and penetration type feed motion vertically.Because the smooth connection of each section of deflector roll bearing-surface bus guarantees the spinning motion of roller and the stationarity of penetration type feed motion, and has guaranteed that the circular arc of spherical roller bearing-surface is connected with the smooth of chamfering circular arc.
As Fig. 3, during spherical roller bearing-surface fine abrasive, processed roller 1 is sent into the preceding deflector roll 2 of Superfinishing machine and the introduction segment of back deflector roll 3 bearing-surfaces successively, and under the friction drive of deflector roll bearing-surface and roller meshing point, roller is done spinning motion and penetration type feed motion vertically around self axis.Because the identical angle that driven the preceding deflector roll 2 of spherical roller rotation and feeding and the axis of the deflector roll 3 positive anti-obliquity of horizontal diameter round afterwards with respect to the bearing-surface middle section, each section of deflector roll bearing-surface bus is tried to achieve according to the envelope of curve theory, and the radial dimension in corresponding cross section equates everywhere, and be under the drive of same transmission mechanism 6, to do constant speed rotation in the same way, the spinning motion of roller and axial penetration type feed motion are stably all the time.At this moment, oilstone 4 bearing-surface to spherical roller under the pressure effect of cylinder 5 is implemented fine abrasive, and the dimensional accuracy of roller and geometric accuracy are improved.
Claims (4)
1. Noncentral penetrated super-finishing method of spherical roller, it is characterized in that: when Superfinishing machine grinds the bearing-surface of spherical roller (1), drive the preceding deflector roll (2) and back deflector roll (3) relative tilt of spherical roller motion, the bearing-surface of deflector roll (2) and back deflector roll (3) is the surface of revolution of trying to achieve according to the envelope of curve theory before described, before deflector roll (2) and back deflector roll (3) drive spherical roller (1) rotation and do axial penetration type feed motion when rotating, while oilstone (4) under the pressure effect of cylinder (5) to the bearing-surface enforcement fine abrasive of spherical roller (1).
2. Noncentral penetrated super-finishing method of spherical roller according to claim 1 is characterized in that: the corresponding cross section radius of a circle of deflector roll (2) and back deflector roll (3) equates before described, and preceding deflector roll (2) and after deflector roll (3) do constant speed rotation in the same way.
3. Noncentral penetrated super-finishing method of spherical roller according to claim 1 and 2, it is characterized in that: the bearing-surface of preceding deflector roll (2) and back deflector roll (3) comprises introduction segment, ground section and derivation section, the introduction segment and the bus of deriving section respectively with smooth connection of bus of ground section.
4. Noncentral penetrated super-finishing method of spherical roller according to claim 3, it is characterized in that: two above active sections are set in described ground section, be provided with changeover portion between two adjacent active sections, the smooth connection of bus of active section and adjacent changeover portion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910154564A CN101704204A (en) | 2009-11-12 | 2009-11-12 | Noncentral penetrated super-finishing method of spherical roller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910154564A CN101704204A (en) | 2009-11-12 | 2009-11-12 | Noncentral penetrated super-finishing method of spherical roller |
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| CN101704204A true CN101704204A (en) | 2010-05-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513894A (en) * | 2011-12-06 | 2012-06-27 | 瓦房店冶矿轴承制造有限公司 | Method for grinding double end surfaces of self-aligning roller |
| CN102717326A (en) * | 2012-05-31 | 2012-10-10 | 河南科技大学 | Analytic method for superfinishing shaping convexity of roller bearing based on evolution forming principle |
| CN103382863A (en) * | 2013-07-05 | 2013-11-06 | 宁波中和汽配有限公司 | Roller with unloading function, and special processing device and processing method thereof |
| CN105392596A (en) * | 2013-07-19 | 2016-03-09 | 埃尔温容克尔研磨技术股份公司 | Method for the centreless grinding of shaft parts, in particular of tubes for assembled camshafts, and grinding-wheel and regulating-wheel pair provided for this purpose |
| CN106312707A (en) * | 2016-08-30 | 2017-01-11 | 河南科技大学 | Tapered roller convexity penetrating type superfinishing method based on combination of oilstones with different thicknesses |
| CN107471079A (en) * | 2017-08-01 | 2017-12-15 | 河南科技大学 | Method is ground using the penetration type taper roller convexity ultra-precision grinding of not being in the mood for of cone post matching deflector roll |
-
2009
- 2009-11-12 CN CN200910154564A patent/CN101704204A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513894A (en) * | 2011-12-06 | 2012-06-27 | 瓦房店冶矿轴承制造有限公司 | Method for grinding double end surfaces of self-aligning roller |
| CN102717326A (en) * | 2012-05-31 | 2012-10-10 | 河南科技大学 | Analytic method for superfinishing shaping convexity of roller bearing based on evolution forming principle |
| CN102717326B (en) * | 2012-05-31 | 2015-02-11 | 河南科技大学 | Analytic method for superfinishing shaping convexity of roller bearing based on evolution forming principle |
| CN103382863A (en) * | 2013-07-05 | 2013-11-06 | 宁波中和汽配有限公司 | Roller with unloading function, and special processing device and processing method thereof |
| CN103382863B (en) * | 2013-07-05 | 2015-11-25 | 宁波中和汽配有限公司 | There is its special apparatus for working of roller and the processing method of Unloading Effect |
| CN105392596A (en) * | 2013-07-19 | 2016-03-09 | 埃尔温容克尔研磨技术股份公司 | Method for the centreless grinding of shaft parts, in particular of tubes for assembled camshafts, and grinding-wheel and regulating-wheel pair provided for this purpose |
| CN105392596B (en) * | 2013-07-19 | 2017-06-16 | 埃尔温容克尔研磨技术股份公司 | Method for carrying out centerless grinding to axle portion part |
| CN106312707A (en) * | 2016-08-30 | 2017-01-11 | 河南科技大学 | Tapered roller convexity penetrating type superfinishing method based on combination of oilstones with different thicknesses |
| CN106312707B (en) * | 2016-08-30 | 2018-04-24 | 河南科技大学 | Taper roller convexity penetration type super precision method based on the combination of different-thickness oilstone |
| CN107471079A (en) * | 2017-08-01 | 2017-12-15 | 河南科技大学 | Method is ground using the penetration type taper roller convexity ultra-precision grinding of not being in the mood for of cone post matching deflector roll |
| CN107471079B (en) * | 2017-08-01 | 2019-11-05 | 河南科技大学 | Method is ground using the penetration type taper roller convexity ultra-precision grinding of not being in the mood for of cone column matching deflector roll |
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Open date: 20100512 |